Magnetic resonance tomography apparatus and method for representation of tissue with very short T₂ relaxation time

摘要

In a magnetic resonance tomography apparatus and method for determination of T2-weighted images of tissue with short T2 time, in the framework of a steady-state free precession sequence with non-slice-selective RF excitation pulses and projection-reconstruction methods, in each sequence repetition a first steady-state is read out in the form of a half echo and a second steady-state signal is read out in the form of a further half echo with very short echo times TE₁ and TE₂=2TR−TE₁, and are combined by weighted addition such that an MRT image of tissue with very short T2 time is obtained with the sequence.